A fungal culture is a test used to determine if fungi are present in any area of the body. Fungi are microorganisms that thrive in moist, dark places, such as shoes, damp locker rooms, or the folds of the skin. Some types of fungi are harmless, whereas others can cause infections. If there is a suspicion of infection, a fungal culture will be performed in the suspected area. Bone marrow tissue produces blood cells. Bone marrow culture is an examination of the soft, fatty tissue found in certain bones. This test is done to look for an infection inside the bone marrow. Histoplasma spp. and other dimorphic fungi, other yeast, Aspergillus spp. Can be identified through this fungal culture for bone marrow.